/*
 * Copyright (c) 2024 Oracle and/or its affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.helidon.webclient.api;

import org.junit.jupiter.api.Test;

import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.hamcrest.Matchers.nullValue;

class Ipv6LookupFinderTest {

    /**
     * If {@code java.net.preferIPv6Addresses} is set, use IPv6.
     */
    @Test
    void testIpv6Preference() {
        assertThat(System.getProperty("java.net.preferIPv6Addresses"), is(nullValue()));
        System.setProperty("java.net.preferIPv6Addresses", "true");
        DnsAddressLookup dnsAddressLookup = DefaultAddressLookupFinder.defaultDnsAddressLookup();
        assertThat(dnsAddressLookup, is(DnsAddressLookup.IPV6_PREFERRED));
    }
}
